<template>
  <div>
    <ul>
      <li v-for="(item,index) in arr" :key="index">{{item}}</li>
    </ul>
    <button @click="move">走一走</button>
  </div>
</template>

<script>
export default {
  data(){
    return {
      arr:['帅哥','美女','程序媛']
    }
  },
  methods:{
    move(){
      this.arr.push(this.arr[0])
      this.arr.shift()
    }
  }

}
</script>

<style>

</style>